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00.029.0.01. Mastrevirus

Cite this publication as: ICTVdB Management (2006). 00.029.0.01. Mastrevirus. In: ICTVdB - The Universal Virus Database, version 4. Büchen-Osmond, C. (Ed), Columbia University, New York, USA

Cite this site as: ICTVdB - The Universal Virus Database, version 4. http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/

Table of Contents

Classification

This is a description of a plant virus at the genus level with data on all virus properties from morphology to genome, replication, antigenicity and biological properties.

ICTVdB Virus Code: 00.029.0.01. Virus accession number: 029001GE. Obsolete virus code: 29.0.1.; superceded accession number: 29010000.
NCBI Taxon Identifier NCBI Taxonomy ID: 10812.

Name, Synonyms and Lineage

Synonym(s): Subgroup I geminivirus, Maize streak virus group; monogeminiviruses (VIDE). Virus is of the family 00.029. Geminiviridae.

Virion Properties

Morphology

Virions consist of a capsid. Virus capsid is not enveloped. Capsid is elongated and exhibits icosahedral symmetry. The capsid is geminate and has a diameter of 15-18.1-20 nm. Capsids appear hexagonal in outline. The capsomer arrangement is clearly visible, or is not obvious. The capsid consists of 22 capsomers. With a length of 25-30-35 nm.






















Electron micrograph of Geminiviridae by R.G. Milne, Istituto di Virologia, CRN, Torino, Italy.

Electron microscopic preparation and references: Virus preparation contains few virions, or many virions.

Physicochemical and Physical Properties

Virions have a buoyant density in CsCl of 1.35 g cm-3. There are 1 sedimenting component(s) found in purified preparations, or 2 sedimenting component(s) found in purified preparations. The sedimentation coefficient is 70-74.6-76 S20w; of the other(s) are 50-52-54 S20w. A260/A280 ratio is 1.1-1.283-1.4. The thermal inactivation point (TIP) is at 50-55-60°C. The longevity in vitro (LIV) is 7-13.33-26 days. Although the titer is dependent on the host, the decimal exponent (DEX) of the dilution end point is usually around 2-4. The infectivity is lost when deproteinized with proteases; retained when deproteinized with phenol or detergent.

Nucleic Acid

The Mr of the genome constitutes 19-19.66-20% of the virion by weight. The genome is not segmented and contains a single molecule of circular, ambisense, single-stranded DNA that forms a closed circle. Minor species of non-genomic nucleic acid are not found in virions. The complete genome is 2672-2752-2900 nucleotides long, is sequenced, complete sequence is about 2672-2752-2900 nucleotides long. The genome has a base ratio of 25.7-26.4-27.7 % guanine; 21.8-24.23-25.5 % adenine; 23.1-23.53-23.9 % cytosine; 24.8-26.06-28.1 % thymidine. The genome has no intergenic poly (A) region.

GenBank records for nucleotide sequences; complete genome sequences.

Proteins

Proteins constitute about 80% of the particle weight.

The viral genome encodes structural proteins and non-structural proteins. Virions consist of 1 structural protein(s).

Non-Structural Proteins: Virus-coded non-structural proteins have been identified by sequence analysis and 1 non-structural protein(s) are found.

Lipids

Lipids are not reported.

Genome Organization and Replication

By itself, genomic nucleic acid is not infectious.

Transcription: Sub-genomic RNA is present in infected cells, or absent from infected cells.

Translation: The genome replicates in the nucleus.

Biological Properties

Natural Host

Domain
Viral hosts belong to the Domain Eucarya.

Domain Eucarya
Kingdom Plantae.

Kingdom Plantae
Phylum Magnoliophyta (Angiosperms, Class Liliopsida (Monocotyledonae).

Class Liliopsida (Monocotyledonae)
Subclass COMMELINIDAE; Order Poales.

Severity and Occurrence of Disease

Host: Signs and symptoms persist.

Transmission and Vector Relationships

Virus is transmitted by a vector. Virus is transmitted by mechanical inoculation, or not transmitted by mechanical inoculation; transmitted by grafting, or not transmitted by grafting; not transmitted by contact between hosts; transmitted by seeds, or not transmitted by seeds; not transmitted by pollen.

Vector Transmission:
Virus is transmitted by arthropods, by insects of the order Hemiptera, family Cicadellidae. Virus is transmitted in a non-persistent manner, or in a semi-persistent manner, or in a persistent manner; retained when the vector moults; does not replicate in the vector; not transmitted congenitally to the progeny of the vector; does not require a helper virus for vector transmission.

Experimental Hosts and Symptoms

Under experimental conditions susceptibility to infection by virus is found in many families, several families, few families. Susceptible host species are found in the Family Chenopodiaceae, Compositae, Gramineae, Leguminosae-Papilionoideae, Solanaceae. The following species were susceptible to experimental virus infection: Aegilops cylindrica, Aegilops triaristata, Aegilops triuncialis, Aegilops umbellulata, Agropyron sibiricum, Agrostis gigantea, Alopecurus pratensis, Andropogon gerardi, Avena fatua, Avena sativa, Avena strigosa, Beta vulgaris, Bothriochloa alta, Brachiaria eruciformis, Brachiaria reptens, Bromus catharticus, Bromus secalinus, Bromus uniloides, Calamagrostis canadensis, Cenchrus argentina, Cenchrus cucullata, Cenchrus echinatus, Cenchrus gayana, Cenchrus radiata, Cenchrus submutica, Cenchrus virgata, Chloris gayana, Cicer arietinum, Coix lacryma-jobi, Cymbopogon distans, Cymbopogon schoenanthus, Cynodon dactylon, Dactylis glomerata, Dactyloctenium aegyptium, Datura stramonium, Datura tatula, Digitaria abyssinica, Digitaria didactyla, Digitaria enantha, Digitaria horizontalis, Digitaria longiflora, Digitaria marginata, Digitaria milanjiana, Digitaria sanguinalis, Digitaria setigera, Digitaria ternata, Digitaria velutina, Echinochloa polystachya, Eleusine africana, Eleusine coracana, Eleusine indica, Elytrigia repens, Eragrostis abyssinica, Eragrostis aspera, Eragrostis ciliaris, Eragrostis curvula, Eragrostis valida, Euchlaena mexicana, Festuca arundinacea, Glyceria fluitans, Heteropogon contortus, Holcus lanatus, Hordeum vulgare, Hyparrhenia rufa, Imperata arundinacea, Ixophorus unisetus, Lagurus ovatus, Lens culinaris, Leptochloa filiformis, Leptochloa virgata, Lolium multiflorum, Lolium perenne, Lolium remotum, Lolium subulatum, Lolium temulentum, Lycopersicon esculentum, Medicago sativa, Miscanthus sacchariflorus, Nicotiana benthamiana, Nicotiana glutinosa, Nicotiana rustica, Nicotiana tabacum, Panicum bergii, Panicum coloratum, Panicum hallii, Panicum maximum, Panicum miliaceum, Panicum texanum, Panicum virgatum, Paspalum almum, Paspalum conjugatum, Paspalum dilatatum, Paspalum notatum, Paspalum scrobiculatum, Paspalum urvillei, Pennisetum clandestinum, Pennisetum purpureum, Phaseolus vulgaris, Pisum sativum, Poa annua, Rottboellia exaltata, Saccharum, Saccharum officinarum, Schedonnardus paniculatus, Schizachrium scoparium, Secale cereale, Setaria chevalieri, Setaria faberi, Setaria homonyma, Setaria italica, Setaria pallidifusca, Setaria verticillata, Setaria viridis, Solanum nigrum, Sonchus oleraceus, Sorghastrum nutans, Sorghum bicolor, Sorghum sudanense, Trichachne californica, Trichloris crinita, Trichloris pluriflora, Trifolium repens, Triticum aestivum, Triticum durum, Urochloa helopus, Urochloa panicoides, Urochloa trichopus, Vaseyochloa multinervosa, Vicia faba, Zea mays.

Experimentally infected insusceptible Hosts: Families containing insusceptible hosts: Cucurbitaceae, Gramineae, or Leguminosae-Papilionoideae, Solanaceae. Species inoculated with virus that do not show signs of susceptibility: Agropyron cristatum, Agrostis canina, Agrostis palustris, Agrostis stolonifera, Agrostis tenuis, Alopecurus aequalis, Andropogon hallii, Arachis hypogaea, Arrhenatherum elatius, Bothriochloa barbinodis, Bouteloua gracilis, Bouteloua hirsuta, Bromus carinatus, Bromus catharticus, Bromus erectus, Bromus inermis, Bromus mollis, Cajanus cajan, Cenchrus canterai, Cenchrus ciliaris, Cenchrus distichophylla, Chloris gayana, Cucumis sativus, Cynodon dactylon, Dactylis glomerata, Dactyloctenium gigantea, Digitaria ciliaris, Digitaria decumbens, Digitaria horizontalis, Digitaria valida, Echinochloa colona, Echinochloa crus-galli, Elymus canadensis, Elytrigia repens, Eremochloa ophiuroides, Euchlaena perennis, Festuca ovina, Festuca pratensis, Festuca rubra, Glycine max, Hordeum jubatum, Leersia hexandra, Lolium multiflorum, Macroptilium lathyroides, Medicago sativa, Microlaena stipoides, Nicotiana debneyi, Nicotiana occidentalis, Nicotiana rustica, Nicotiana tabacum, Panicum coloratum var. Makarikari, Panicum maximum, Panicum miliaceum, Paspalum dilatatum, Pennisetum americanum, Pennisetum clandestinum, Pennisetum macrorum, Pennisetum typhoides, Phalaris arundinacea, Phalaris tuberosa, Phleum pratense, Poa compressa, Poa pratensis, Poa trivialis, Saccharum officinarum, Setaria italica, Setaria nigrirostris, Setaria sphacelata, Setaria viridis, Solanum melongena, Solanum tuberosum, Sorghum bicolor, Sorghum halepense, Sorghum miliaceum, Sorghum propinguum, Sorghum vulgare, Stenotaphrum secundatum, Tripsacum dactyloides, Vigna radiata, Vigna unguiculata, Zea diploperennis, Zea mays, Zea perennis.

Histopathology: Virions are found in the cytoplasm, or nucleus, or cell vacuole.

Cytopathology: Inclusions are present in infected cells, or not present in infected cells. Inclusion bodies in the host cell are found in the cytoplasm, or nucleus. Nuclear inclusion bodies are crystals. Cytoplasmic inclusions are viroplasma. Inclusions are typically in the formation of large irregular sheets of virions regularly arranged in rows. Inclusions contain mature virions.

Geographical Distribution

Geographical distribution of the virus is probably restricted. The virus spreads in Africa. The virus occurs in Australia, or Benin, or Bulgaria, or Cape Verde, or Cote d'Ivoire, or Czechoslovakia (former), or Egypt, or France, or Hungary, or India, or Japan, or Kenya, or Madagascar, or Malawi, or Mauritius, or Mozambique, or Pakistan, or Reunion, or South Africa, or Sudan, or the USSR (former), or Uganda, or Vanuatu, or Yemen, or Zimbabwe.

Taxonomic Structure of the Genus

Type species 00.029.0.01.001. Maize streak virus .

Species in the Genus

List of Species in the Genus.

Tentative Species in the Genus

Tentative Species in the Genus.

Data Sources and Contributions

The description has been compiled from data in the ICTV Report presented by Briddon RW, Markham PG.

References

The following generic references are cited in the most recent ICTV Report.

PubMed References.

Images

Taxon images: • EM by Robert G. Milne. • EM by Robert G. Milne. • EM by Robert G. Milne. • EM from IACR Rothamsted. • EM by Robert G. Milne.



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DELTA - DEscription Language for TAxonomy developed by Dr Mike Dallwitz, Toni Paine and Eric Zurcher, CSIRO Entomology, Canberra, Australia. ICTVdB - The Universal Virus Database, developed for the International Committee on Taxonomy of Viruses by Dr Cornelia Büchen-Osmond is written in DELTA. The virus descriptions in ICTVdB are coded by, or using data from experts in the field of virology or members ICTV. The character list is the underlying code. All virus descriptions are based on the character list and natural language translations are automatically generated and formatted for display on the Web from the descriptions in DELTA-format. The description has been generated automatically from DELTA files. DELTA - DEscription Language for TAxonomy developed by Dr Mike Dallwitz, Toni Paine and Eric Zurcher, CSIRO Entomology, Canberra, Australia.

ICTVdB - The Universal Virus Database, developed for the International Committee on Taxonomy of Viruses (ICTV) by Dr Cornelia Büchen-Osmond, is written in DELTA. The virus descriptions in ICTVdB are coded by ICTV members and experts, or by the ICTVdB Management using data provided by the experts, the literature or the latest ICTV Report. The character list is the underlying code. All virus descriptions are based on the character list and natural language translations from the encoded descriptions are automatically generated and formatted for display on the Web.

Developer of the DELTA software: M. J. Dallwitz, T. Paine and E. Zurcher

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Last updated on 25 April 2006 by Cornelia Büchen-Osmond
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